Skip to content

Commit

Permalink
Browse files Browse the repository at this point in the history
Fix #69841 by updating LLVM submodule. Includes regression test for i…
…ssue 69841.
  • Loading branch information
pnkfelix committed Mar 30, 2020
1 parent 9a12971 commit 0c4ad1f
Show file tree
Hide file tree
Showing 2 changed files with 31 additions and 1 deletion.
2 changes: 1 addition & 1 deletion src/llvm-project
30 changes: 30 additions & 0 deletions src/test/ui/issues/issue-69841.rs
@@ -0,0 +1,30 @@
// This is a regression test for issue rust-lang/rust#69841, which exposed an
// LLVM bug which needed a fix to be backported.

// run-pass

fn main() {
let buffer = [49u8, 10];
let mut a : u64 = 0;
'read: loop {
for c in &buffer {
match c {
48..=57 => {
a*= 10;
a+= *c as u64 - 48;
}
10 => {
break 'read;
}
_ => {
unsafe { std::hint::unreachable_unchecked() };
}
}
}
}
if a == 1 {
println!("What did you expect?");
} else {
panic!("this should be unreachable.");
}
}

0 comments on commit 0c4ad1f

Please sign in to comment.